729140671 has 4 divisors (see below), whose sum is σ = 833303632. Its totient is φ = 624977712.

The previous prime is 729140669. The next prime is 729140681. The reversal of 729140671 is 176041927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 729140671 - 2¹ = 729140669 is a prime.

It is a super-2 number, since 2×729140671² = 1063292236212660482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 729140671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729140651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52081470 + ... + 52081483.

It is an arithmetic number, because the mean of its divisors is an integer number (208325908).

Almost surely, 2^729140671 is an apocalyptic number.

729140671 is a deficient number, since it is larger than the sum of its proper divisors (104162961).

729140671 is a wasteful number, since it uses less digits than its factorization.

729140671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104162960.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 729140671 is about 27002.6048928617. The cubic root of 729140671 is about 900.0578855773.

The spelling of 729140671 in words is "seven hundred twenty-nine million, one hundred forty thousand, six hundred seventy-one".